Adding machine



Maty 24,1927. 1,629,615"

. W. E. DUNNING ET AL ADDING MACHINE l K Filed May 2z, 192g 4 sheets-sheet 1 May 2441927. 1,629,615

W. E. DUNNING ET AL ADDING MACHINE F11`ed May 22. 1922 4 sheets-sheet 2 i l@ :fam daon I A amg/LM May 24, 927.

w. E. DuNNlNG E T AL VADDING MACHINE Filed May 22. 1222 4 Sheets-Sheet 3 1,629,615 May 2 4 1927' w. E. DUNNING ET Al.'

ADDING MACHINE .Fiewmay 22, 1922 4 sheets-sheet 4 *I i gmwroa Jaw .3a/ofen @H501 ne@ Patented May 24, 1927. l

UNITED STATES PATENT OFFICE.

WILLIAM E. DUNNING AND JACOB BACI-IOFEN, OF ALLIANCE, OHIO, ASSIGNORS T THE MCCASKEY REGISTER COMPANY, OF ALLIANCE, OHIO, A CORPORATION OF OHIO.

ADDING MACHINE.

Application tiled May 22, 1922. Serial No. 562,653.

The invention relates to the printing or Fig. V, a longitudinal Section 0f the re- 55 retordinor mechanism in an adding machine wind reel on line VV, Figs. I and IV; or the li e; and the object of the improve- Fig. VI, a cross section of the reel on ment is to automatically rewind the record line Vl-VI, big, V 3 5 strip, to provide a. rack to support a sales Fig. VII, a detached perspective View of bill for recording a total thereon, and to the platen plate and sales bill rack; and 60 provide a platen plate to support the record Fig. VIII, a plan of a sales bill having strip or a' sales bill for making pencil corthe pencil and machine totals recorded thererections or notations thereon. on. 1o The record strip in an adding machine is Similar numerals refer to similar parts automatically unwound by the operation of throughout the drawings. 65 the machine from a roll mounted at the rear A platen roll 1 is rotatably mounted 011 of the machine, and after passing around the rear end of the case 2 of an adding mathe platen m11 where the record "of trans` chine, in front of which roll the type bars 15 actions is imprinted thereon the strip is 3 of the machine are operatively mounted.

Projected rearward and accumulates in a The inkribbon t of the machine'is mounted 70 bunch at the rear of the machine. The on reels 5 for operatii'ig around posts 6 and present improvement involves the use of a passing between the key bars and the p'laten reel adjacent to the roll, upon which the strip roll. A record Strip roll 7 is rotatably is automatically rewound after passing mounted on a bracket 8 in rear of the platen around the platen roll. roll, whence the record strip 9 passes Jror- 76 When a plurality of items are entered in ward over a guide 10, thence under the a sales bill, they are usually totaled in pencil platen roll l, and thence upward around the by the clerk before delivering a carbon copy forward face of the same betweenthe rib-` to the customer and placing the original bon and the platen roll. A ratchet wheel 11 copy ina filing appliance; and the present on one end of the platen roll is actuated b 80 improvement further contemplates the use a spring detent 12 to rotate the platen rol of an adding machine for verifying or audita limited distance each time a record has l ing the total thus made, and involves the use been imprinted on the strip by swinginr the ao of a rack to support a sales bill in the maoperat-ing handle 13 of the adding machine,

chine for imprinting'the total thereon, and all in well known manner. 85 also-involves the use of a platen plate extend- For the purpose of the present improveing upward and rearward Afrom the platen ment, upright arms 14 are secured tothe roll, to serve as a rest for the record strip bracket 8, on each side of the roll, and a and more particularly for a' sales bill sup, transverse shaft 15 is journaled in the upper '0i-ted in the rack, ends of these arms. A reel l16 is secured on 90 "The invention is illustrated in the accomthe shaft between the arms, and may com# panying drawings, forming part-hereof, in prise a tubular body 17 with cylindric heads Which.- 18 in each end, each having 'a ldisk flange 40 Figure I is a plan view of an adding 19 to form a guide or support for the edges machine with the improved rewind mechof the record strip, when the same is wound anism, the bill rack, and the platen plate on the reel. thereon; A The journal 20 one end of the shaft 15 is Fig. II, an inclined elevation of the repreferably reduced in diameter so as to form 45 wind mechanism, the bill rack, and the an annular shoulder 21 Yabutting'the inner platen plate, as on line II-II, Fig. IV, side of the upright arm; and outside this 100 showing a sales bill supported by the rack, journal the shaft is again Areduced in diamand partl broken away; eter to form afscrew stem 22, upon which a Fig. I I. a fragmentary section on line nut 23 is turned against the annular shoulder III-IIL Figs. I and II, showing the platen formed by the end of the journal; the length roll actuating mechanism; of the journal being greater thandhe thick- Fig. IV, a side elevation of the rewind ness of the arm 14, so that the shaft may mechanism, the bill rack and the platen turn freely in the arm bearing. plate; The shaft 15 is extended outward beyond the other bearing arm 14, and upon the end of the shaft is swivelled a pulley 24 which is retained thereon by a washer 25 secured by a screw 26 on the end of the shaft. The swivelled pulley is impinged by a coiled spring 27 located around the shaft and eX- tending between the hub 28 of the pulley and a collar 29 adjustably secured by a set screw 30 on the shaft. The frictional engagement and pressure of the spring causes the shaft and the reel to be normally rotated by a turning of the pulley, but when the reel is subject to a substantial restraint, the pulley may turn upon the shaft without rotatin it.

A rivin pulley 31 is secured on the axial shaft 32 o the platen roll, and a belt 33 is mounted around thepulleys, so that the reel 16 is rotated each time the platen roll is turned; and b attaching the end of the record strip to t e reel .it is evident that the same will be rewound thereon as it is projected from the platen roll. The parts of the mechanism are so arranged that the peri hery of the reel will tend to travel slightly faster than the periphery of the roll, so that the record strip will be kept taut between the roll and the reel; the slight differential of speed bein accommodated by a slipping of the hub o the swivelled pulley against the end of the compression spring.

A cylindrical segment spring 34 is preferably mounted upon and extends around more than half the circumference of the body 17 of the reel, and the edges of the spring segment 'are slightly beveled so that an end of a record strip may be readily inserted under the same for being clamped against the body of the reel by a slight turning of the spring around the same; which enables a"`record strip to be readily attached and detached from the reel.

In the use'of the machine the portion of:

the record strip used each day, vor other desired period, is rewound upon the reel as the machine is operated; and at the end of the period, lthe portion of the strip which has been wound on the reel may be severed from the remainder of the strlp, and may then be unwound from the reel for filing, or

/for such other disposition as ma be desired.

A bracket 35 is secured to tie frame 36 which carries the platen roll, and as shown, the bracket may be made of sheet metal with flange ears 37 on each end for securing it.

to the frame, and may have its lower edge strengthened by an upturned .flange 38,

which may be serrated on its edge-to form a blade by which the record strip may be conveniently severed.

` The body of the bracket is preferably in the form of a platen plate 39, extending upward and rearward from the face of the platen roll; and a'transverse slot 40 is provided across the lower portion of the platen a depending tongue'41 from the body of the bracketthrough which slot the record strip is passed and operated on its way upward and rearward from the platen roll.

'lhe bracket is also provided with two pendant hooks 42, depending around the forward face of the platen roll on each side of the record strip in rear on the ink ribbon. As shown these hooks may be secured to the upturned flange 38 of the bracket and the free end of each hook 43 is preferably extended upward substantially parallel with the body of the hook for`l a considerable distance, and then bent slightly forward, so as to form a rack in which the lower end of a sales bill may be entered for supporting it between the ink ribbon and the forward face of the platen roll, as shown in Fig. IV. The sales bill 44 is shown wi-th'entries representing ordinary transactions made by a clerk in a retail store and includes the amount of an account forwarded, the` details of the various items comprising the particular sale, the addition of the same, and the totaling of the account; all of which entries are usually made in pencil by the clerk.v Such sales bills are generally made in duplicate, 'and a carbon copy of the same is handed to the customer while the original coyy is placed in a filing appliance.

he improved adding machine may be employed for vauditing sales `bills of this character, in which event the various items appearing in the bill are successively 'set up'in the adding machine, and if the total, shown by the accumulator wheels is the same bill have been recorded as they are set up y in the machine, as shown in Flg. I, where- 1n the record strip has been moved upward so that the entries will show above the supporting bracket.

In event the total shown by the machine does not agree with the pencil total on the bill, such errors as are found therein vmay be readily corrected by `using the platen f plate as a support upon which to write upon the bill; after which the correct total may be printed on the bottom of the bill as above described.

We claim:

1. A printing mechanism for an adding machine o r the like, including a platen roll and anink ribbon, and a bracket having depending hooks extending downward in and supporting a of the `face of the roll for receiving sales bill or the like between the ink ribbon and the forward face of the platen roll. i

2. A printing mechanism for an adding machine or the like, including a platen front roll around which a record strip operates,

and a bracket having a platen plate extending upward and rearward from` the face of the platen roll, there being a transverse slot in the platen plate through which the record strip may operate.

3. A printing mechanism for an adding machine or the like, including a platen roll,A around which a record strip operates, and

a bracket having a platen plate extending upward and rearward from the face of the platen roll, there being a transverse slot in the platen plate throu h which the record strip may operate, an there being an upturned flange on the lower edge of the platen strip having an edge for severing the record strip.

4. A printing mechanism for an adding machine or the like, including a platen roll around which a record strip operates, and a bracket having a platen plate extendin upward and rearward from the face o the platen roll,

WILLIAM E. DUNNING. JACOB BACHOFEN. 

